ALL meanings of iff
iff
I i - noun Technical meaning of iff 1. (file format) Interchange File Format. 2. Identify friend or foe (radar). 1
- noun Definition of iff in Technology (mathematics, logic) if and only if, i.e. necessary and sufficient. For example, two figures are congruent iff one can be placed over the other so that they coincide. 1
- noun iff If and only if. 1
- conjunction iff a shortened form of if and only if: it indicates that the two sentences so connected are necessary and sufficient conditions for one another. Usually iff is used for equivalence in the metalanguage, rather than as the biconditional in the object language 0
- abbreviation IFF Identification, Friend or Foe: a system using radar transmissions to which equipment carried by friendly forces automatically responds with a precoded signal 0
- noun iff Identification, Friend or Foe: an electronic system for recognition of friendly aircraft, ships, etc. 0